South Korea's Yeosu Expo

A parade with a giant marionette at the expo, Yeosu, South Korea, June 9, 2012. (S.L. Herman/VOA)

Those who have visited complain of long waits to enter exhibit buildings, Yeosu, South Korea, June 9, 2012. (S.L. Herman/VOA)

The Expo site covers 250,000 square meters, Yeosu, South Korea, June 9, 2012. (S.L. Herman/VOA)

A guide holds a robot fish.at the expo, Yeosu, South Korea, June 9, 2012. (S.L. Herman/VOA)

A robot fish swimming in a tank at the Yeosu Expo, South Korea, June 9, 2012. (S.L. Herman/VOA)

A giant robot at the expo, Yeosu, South Korea, June 9, 2012. (S.L. Herman/VOA)

A pair of old 67-meter high cement silos were transformed into the Sky Tower containing the "world's loudest" pipe organ, Yeosu, South Korea, June 9, 2012. (S.L. Herman/VOA)

Korean-American K-pop star Park Jae-bum performs at the expo, Yeosu, South Korea, June 9, 2012. (S.L. Herman/VOA)

4-Minute is an Award-winning five woman group 4-minute performs at the expo, Yeosu, South Korea, June 9, 2012. (S.L. Herman/VOA)

The nightly Big O water fountain and laser show at Expo 2012, Yeosu, South Korea, June 9, 2012. (S.L. Herman/VOA)

The nightly Big O water fountain and laser show at Expo 2012, Yeosu, South Korea, June 9, 2012. (S.L. Herman/VOA)